explicit PHDRS to control number of Elf32_Phdr: no PT_GNU_STACK

l_lx_elf86.lds l_lx_exec86.lds l_lx_sep86.lds l_lx_sh86.lds

committer: jreiser <jreiser> 1083997506 +0000

src/stub/l_lx_exec86.lds

@@ -31,6 +31,11 @@
 OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
 OUTPUT_ARCH(i386)
 /*ENTRY(_start)*/
+PHDRS  /* force exactly 1 ELF32_Phdr: in particular, no PT_GNU_STACK */
+{
+  phdr0 PT_LOAD FILEHDR PHDRS FLAGS(7);
+}
+
 SECTIONS
 {
   /*  0x00401000: l_lx_exec86.asm assumes 1 page up from 64KB boundary */
@@ -41,6 +46,5 @@ SECTIONS
     *(.data)
     *(.bss)
     *(COMMON)
-  }
-  /* save other Phdr for the overlay */
+  } : phdr0
 }

src/stub/l_lx_sep86.lds

@@ -31,15 +31,20 @@
 OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
 OUTPUT_ARCH(i386)
 ENTRY(_start)
+PHDRS  /* force exactly 2 ELF32_Phdr: in particular, no PT_GNU_STACK */
+{
+  phdr0 PT_LOAD FILEHDR PHDRS FLAGS(7);
+  phdr1 PT_LOAD;
+}
 SECTIONS
 {
   . = 0x00400000 + SIZEOF_HEADERS;
   .text : {
     *(.text)
     *(.data)
-  }
+  } : phdr0
   /*  0x08048000: customary Linux/x86 Elf .text start */
   . = 0x08048000 + (0xfff & .);
   .data : {
-  }
+  } : phdr1
 }

src/stub/l_lx_sh86.lds

@@ -31,22 +31,21 @@
 OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
 OUTPUT_ARCH(i386)
 /*ENTRY(_start)*/
+PHDRS  /* force exactly 1 ELF32_Phdr: in particular, no PT_GNU_STACK */
+{
+  phdr0 PT_LOAD FILEHDR PHDRS FLAGS(7);
+}
+
 SECTIONS
 {
   /*  0x00800000: avoid 0x00400000 for shell itself being compressed */
   . = 0x00800000 + SIZEOF_HEADERS;
   . = ALIGN(0x80);
-/*
-  .text : {
-    *(.text)
-    *(.data)
-    }
-*/
   .data : { /* put everything together in one Phdr */
     *(.text)
     *(.rodata)
     *(.data)
     *(.bss)
     *(COMMON)
-  }
+  } : phdr0
 }